Automatic lock



3. I220. v AUTOMATIC LOCK.

APPLICATION FILED APR. 16, 1-920.

Patented May 30, 1922.

2 SHEETS-SHEET I.

5,41. VA Q INVENTOR.

I Fig. 6 is an elevational View of the actuating full, clear and exact SALVATORE .IZZO, OF ROME, ITALY ASSIGNOR TO REV.

- APQLIS, INDIANA.

MllRINQPBIORI, or INDIAN- AUTOMATIC LOCK.

To all whom it may concern Be it known that I, SALVATORE Izzo, a subject of the King of Italy, anda resident of Rome, Kingdom of Italy, have invented a certain new and useful I do hereby declare that the following is a description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to permutation locks and is especially intended to guarantee the safety of railroad freight cars and the like; The lock is distinguished by the fact that the same cannot be opened without the proper key, said key being the only one for which the mechanism of the lock has been adjusted to receive, said mechanism comprising a plurality of elements such that a plurality of individual permutations can be constructed in the same look as desired.

A further feature of the invention consists in inclosing the permutation mechanism within a hinged cover or housing, the same being secured in closed position and locked therein only when the lock or latch is also looked.

The full nature of this invention will be understood from the accompanying draw- 111 s.

*ig. 1 is an elevational view of the permutation door lock showing the same in the locking position upon a door, the housing or casing thereofbeing shown in the closed position. Fig. 2 is a similar view showing the lever latch removed from the lock, and the housing With the locking mechanism in the open position. Fig. 3 is an enlarged vertical sectional view through the lock. Fig.

4 is a top plan view of the same. Fig. 5 is an elevational and a sectional View of the individual key required to operate the lock.

plate. Fig. 7 is an elevational view'of an auxiliary locking tooth receivable by said look when the latter is to be kept closed, but is not to be used to lock the doors of the car or the door to which the lock is attached.

In the drawings 1 indicates a stationar box or housing secured to one portionof the parts to be locked together such as doors and the like. 2 indicates a supplementary box or housing suitably supported by the-sta- Automatic Lock; and

. Specification of Letters Patent. Patented pf kgg .1922 Application filed April 16, 1920.

Serial No. 374,469.

tionary box by the hinge 3 to form an enclosing casmg. As shown clearly in Figs. 1, 2 and 3 the movable casing or box portion isadapted to be insertable in and be recelved by the stationary box portion 1. The movable casing '2 and the stationary box 1 are herein shown provided with openings 23 and 22- respectively which are adapted to register when said boxes are in the closed position, as shown clearly in Fig. 3. 'When in said position the registering openings are adapted to receive a locking tooth 5 depending fromand being integral with a revolving or pivotally supported lever latch at, said locking tooth being suitably notched or provided. with a recess or hole 6 shown'by the dotted lines in Fig. 2.

Themovable casing or box 2 contains the locking mechanism, as shown clearly in Fig. 2. ivlthin said casing is secured a stationary perforated plate 21, and suitably supported behind the same is an actuating plate 10 shown in F ig. 6. The plate 21 as clearly in Fig. 2, is provided with a suitable slot Fr through which projects an actuating pin 9. Slidably supported upon the plate 21, as shownclearly in Figs. 2 and 3, is a locking bolt 7, the same provided with a plurality of aligning slots 8. The headed guide pins 8, stationarily secured to the plate 21, slidably support and limit the move ment of the locking bolt 7. As shown clearly in Fig. 2 the locking bolt 7 is actuated by the actuating pin 9 engaging a portion thereof, said pin reciprocating said locking bolt in opposition to the spring member 2%.

in the slot 6 to lock the lever latch 4 in the;

lock and registering openings 22 and 23. 2'

Fromtheforegoing it will he understood that when the plate 10 is actuated by suitable mechanism hereinafter to be described, the

shown locking tooth 7" will be withdrawn from the hole or recess 6 and the latching lever latch 41: may be removed from the lock.

\Vhen it is desired to maintain the lockin the closed position, as shown in Figs. 1, 3 and 41 and yet not lock the door or portion to which the lever latch a is pivotally supported, an auxiliary locking tooth B, having the hole 106 shown clearly in Fig. 7, is provided by which said lock is maintained in the closed position. This is accomplished by having the tooth B seatable in the registering opening 2223 and having the tooth 7 register with the hole 106. i

The means for actuating the plate 10 carrying the actuating pin 9 is as follows. The actuating plate 10, as shown clearly in Fig. 6, is provided with a plurality of parallel and longitudinally extending slots 25. In spaced relation with said slots and communicating therewith and in spaced relation with each other, are a plurality of semi-circular notches 25. The plate 10 is also provided with a finger piece 11 which is adapted to project outwardly from said look, as shown in Fig. 1, and by which said plate is actuated to reciprocate the locking bolt 7, as shown. The stationary plate 21 is provided with a plurality of perforations 21 see Fig. 3 which normally register with the longitudinal slots 25 and the semi-circular .notches 25 Inv the slots 21 are secured locking pins 16, said pins being slidable transversely of the actuating plate 10 and the stationary plate 21. 7 Each of the pins is cut away as shown at 21' to form a stem portion surrounding which is positioned the tension spring 18 which normally forces said locking pin towards the plate 10. The upper end of the spring 18 is held in position by means of the stop pin 19. Said stop pins 19 extend transversely through the locking pins 16 and have their ends engageable in suitable slots formed upon projecting and enclosing bosses 21 in which each of said locking pins is slidable and turnable. As shown in the drawings, the locking pins 16 are provided with conically formed ends 15, such that the v pins may be cammed by suitable means so as to reciprocate longitudinally of the registering notches 25 and the openings 21. Upon the exposed portion of the locking pin 16 is a button 20, the same carrying suitable l indicating means such as numbers, letters and the like. Each pin 16 is provided with a plurality'of transversely extending notches,

17, see Fig. 3, said notches preferably lying in parallel planes rather than in the same plane. Herein the locking devices are shown provided with but two notches and these are positioned diametrically opposite upon the locking'pin and in parallel relation, as-

shown in Fig. 3. It will be understood that any locking pin 16 may be turned in the present construction 180 degrees, whereby the transverse notch, which is positioned adjacent the semi-circular slots 25 in the plate 10, is the effective notch governing the control of the plate by said pin. It will be understood that in this manner with'a series of pins, such as disclosed, and with five in one row, there is provided a slot 25 in the plate 10 with five semi-circular slots seating said pins. foregoing that with these five pins in one row, since each pin is provided with two diametrically positioned transverse slots, that when any one or a plurality of said pins are turned to select one or either of said transverse slots, a number of combinations can be obtained with this rowof five pins, the number thereof being determined from the usual permutation formula. I In the drawing, however, there is illustrated a lock in whichnot only five pins are positioned in a row, but there are ten rows of such locking pins instead of one row of five pins each. In this manner innumerable combinations, which can be calculated from the before mentioned formula, are possible. While there are but two diametrically positioned notches 17 shown in each locking pin, it will be evident that more than two notches may be secured to each locking pin, and a convenient method of indicating the position of each pin can be determined by diametrical slots formed in the boss 21 to receive the stop pin 19.

The means. for actuating each of the re spective pins comprises a key plate 12, shown clearly in Fig. 5, the same being insertable in a slot formed in the casing 2. Said key is shown provided with a beveled edge 12, which beveled edge engages the conical ends 15 of the locking pins 16. The key 12 is also shown provided with a plurality of fiutings or grooves 13, similar in number to the longitudinal slots 25 and parallel thereto. Registering'with each of the semi-circular slots 25 and the holes 21 of the plate 21 are a plurality of conical depressions 1 1 formed in said key plate. Said conical depressions are of various depths, each being determined by. the level 01 the transverse slot 17 in the pin16 which is the effective controlling slot such that the key plate 12 will slide the pin 16 longitudinally of the registering openings 25" and 21F in the actuating plate 10 and the stationary plate 21 respectively a sufficient distance against the tension of the retain ing spring 18, such that the e'fifective notch It will be evident from the 17 of said locking pins will lie'in the plane I that if the depth of the conical depressions 14 is not, or is more than sufiicientto raise v the locking pins 16 so that the proper transverse notch 17 will not register with the plate 10, said plate cannot be moved in wardly when the finger-piece 11 is pressed, which will not actuate the locking bolt 7.

7 While the invention has been described in great detail in the foregoing specification it will be understood that the broader features thereof are not to be limited thereby, since many modifications will suggest. themselves to those skilled in the art, a few of which have been suggested in the foregoing specification.

The invention claimed is:

l. A look having in combination a latch, including a recessed to0th, a hinged casing having an opening in one end of each hinged portion, said openings registering when said hinged casing portions are in closed position to receive said recessed tooth, a bolt slidable into engagement with said recessed tooth to retain the same in the lock and the lock casing in closed position.

2. A lock having in combination a slidable bolt, a plate for sliding said bolt, said plate having a slot therein and a semi-circular opening communicating with said slot, a locking pin slidably positioned in said plate and provided with a transverse notch adapted to register and receive said plate, spring means normally holding .said locking pin in the plate looking posltion, and a ey for moving said pin from said position to register said notch with said plate to permit the latter to be moved to actuate said bolt.

8. A lock having in combination a latch,

including a recessed tooth thereon, a hinged casing havlng an opening in one end of each hinged portion, sald openings registering when said hinged casing portions are in closed position to receive said recessed tooth, a bolt-slidable into engagement with said recessed tooth to retain the same and the lock casing in closed position, a plate for sliding said bolt, said plate having a slot therein and a semi-circular opening communicating with said'slot, a locking pin slidably positioned in said plate and provided with a transverse notch adapted to register and receive said plate, spring means normally holding said locking pin in the plate locking position, said pin from said position to register said notch with said plate to permit the latter to be moved to actuate said bolt.

and a key for moving 4. A look having in combination a slidable bolt, a plate for sliding said bolt, said plate having a slot therein and a semi-circular opening communicating with said slot, a locking pin slidably positioned in said plate, said pin being provided with a plurality of transverse notches in parallel relation, each notch when positioned in the plane of the plate being adapted to permit the plate to move, means positioning one of the notches to operate, and a key corresponding to the locking position selected for moving said pin to register the selected ter to be moved to actuate said bolt.

5. In a permutation lock the combination with a slidable bolt, of a plate for sliding the same, a plurality of pins slidable through said of transverse notches therein, said pins being arranged in a line, means for positioning each pin independently of the other pins whereby a particular notch thereof must register with the plate to permit the latter to be moved, and a key for camming said pins into position so that the proper notches will register with the plate.

6. In a permutation lock the combination with a slidable bolt, of a plate for sliding the same, a plurality of pins slidable through said plate each pin having a plurality of transverse notches therein, said pins being arranged in a line, said pins also being arranged in a series of lines, means for positioning each pin independently of the other pins whereby a particular notch thereof must register with the plate to permit the latter to be moved, and a key for camming said pins into position so that the proper notches will register with the plate.

7. A look having in combination a latch, a hinge casing having an opening in one end of each hinged portion thereof, said openings registering when said hinge casing portions are in closed position to receive said latch, and a bolt within said casing for engagement with said latch to retain the same in the lock and the casing portions in the closed position.

In witness whereof, I have hereunto affixed my signature.

SALVATORE IZZO. Witnesses:

' GAETANO CEsoRsnRRA, 1 "EM NUEL ALFERIA.

pin notch with the, plate to permit the lat plate each having a plurality- 

